Heat oven to 450 degrees. In large bowl mix 2 tablespoons of the teriyaki sauce and the ginger to blend thoroughly; add beef and mix to blend thoroughly. Form into 4 patties 1 cm thick. Cook potato nuggets as package directs, baking for 15 to 17 minutes until crisp. Meanwhile, in small bowl mix the remaining 1.5 tablespoons teriyaki sauce, the ketchup and pepper flakes to make sauce for burgers and potatoes; set aside. In nonstick skillet over mediumhigh heat pan fry burgers to desired doneness, turning once. On bottoms of buns layer burgers, pineapple and onion slices and lettuce. Cover with bun tops. Serve sauce with potato nuggets and burgers. Menu: Coleslaw, Frozen Yogurt Nutritional Information Per Serving: 810 calories; 39 g fat; 70 mg cholesterol; 1990 mg sodium; 86 g carbohydrate; 5 g fiber; 30 g protein.